Geographic variation in avian clutch size and nest predation risk along a productivity gradient in South Africa.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10100932" target="_blank" >RIV/00216208:11310/11:10100932 - isvavai.cz</a>

Alternative codes found

RIV/68081766:_____/11:00369550

Result on the web

<a href="http://dx.doi.org/10.2989/00306525.2011.607863" target="_blank" >http://dx.doi.org/10.2989/00306525.2011.607863</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2989/00306525.2011.607863" target="_blank" >10.2989/00306525.2011.607863</a>

Result language

angličtina

Original language name

Geographic variation in avian clutch size and nest predation risk along a productivity gradient in South Africa.

Original language description

Geographic variation in avian clutch size is thought to be related to the variation in nest predation rate and food availability. We studied predation on artificial ground nests along a large-scale geographic gradient in South Africa, and calculated meanclutch sizes of birds occurring in atlas quadrates surrounding our study sites. Clutch sizes generally increased with increasing productivity and seasonality. The least productive desert site was characterised also by the highest predation rate, whereasall the other sites located in savannas revealed much lower and more or less constant predation rate. We found no evidence for relationship between nest predation rates and clutch sizes of ground-nesting birds. This indicates that food availability is the major factor responsible for geographical variation in bird clutch sizes across South Africa, though high predation rate might also contribute to low clutch size in least productive arid environments.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ostrich

ISSN

0030-6525

e-ISSN

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Volume of the periodical

82

Issue of the periodical within the volume

3

Country of publishing house

ZA - SOUTH AFRICA

Number of pages

14

Pages from-to

175-183

UT code for WoS article

000299427600003

EID of the result in the Scopus database

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